import java.text.*;

public class Example8_19 {

   public static void main(String args[]){

      int n= 12356789;

      System.out.println("整数"+n+"按千分组(带正号):");

      String s=String.format("%,+d",n);

      System.out.println(s);

      double number = 98765.6789;

      System.out.println(number+"格式化为整数7位，小数3位:");

      s=String.format("%011.3f",number);

      System.out.println(s);

   }

}
